Process of extracting oils from fullers&#39; earth and like materials.



. L. FELIZAT.

.PROGESS 0F EXTRAGTING OILS PROM FULLER SEARTH AND LIKE MATERIALS.

APPLICATION FILED FEB. 25, 1910.

L N/Q4350 Patented Aug119, 1913.

from the residues.

- TED STATES PATENT I OFFICE.

LOUIS nnnrzar, or SALON, BoUcHEsm -ruroma, FRANCELASSIGN'OR 'ro LA soonirn HUILEIRIE, ET SAVONNERIE DE LURIAN, or SALON, BOUCHES-DU-BH'ONE, FRANCE.

PROCESS OF EXTRACTING OILS FROM FULLERS EARTH AND LIKE MATERIALS.

increase.

Specification of Letters Patent.

Patented Aug. 19, 1913.

Application filed February 25, 1910. Serial No. 545,896.

To all whom it may concern:

Be it known that I, Louis FiiLIzA'r, a citizen of the Republic of France, residing at Salon, Bouches-du-Rhne, France, have invented a Process of Extracting. Oils from Fullers Earth and Like Materials, of which the following is a specification.

This invention has for its object to effect practically the complete extraction of the-oil contained in hydrosilicates, fullers earth,

animal charcoal or mineral black that has been used for decoloring oils.

The process by means of which this result is obtained consists in adding salt water to the earths or products in question, heating to a temperature of about 85 degrees and then treating with sulfuric acid and carbonate of soda thrown gradually and carefully into the mass while the same is being con stantly agitated by means of a suitable apparatus. This results in a vigorous evolution of carbonic acid which separates the oil The presence of the salt in the water renders the separated oil clear. While the salt, however, may be omitted without seriously afiecting the extraction of the oil, the oil separated is not as clear and the full advantages of the invention are not secured.

The accompanying drawing represents diagrammatically in vertical section suitable apparatus for carrying out this process.

This apparatus comprises a cylindrical vat 1 within which and in contact with the walls thereof is arranged a steam heating coil 2. For agitating the material placed in the vat for treatment there is arranged in the vat a beater 3 provided with blades and having a vertical shaft driven from the exterior of the vat through any suitable transmission gear 5 and 6.

The operation with the apparatus described is conducted in the following manner:-A quantity of about QOOO-kilos of the earths or products in question and from 700 to 800 kilos of salt water of from 7 to'8 degrees Baum is placed in the vat and steam admitted to the coil 2 until the temperature of the mass is about 85 degrees centigrade.

A liter of sulfuric acid 66 Baum is then added, the beater 3 is set in motion and carbonate of soda Earefully thrown into the mass. When the evolution of carbonic acid has taken place and after about a quarter of an hour, the heaters 3 are stopped and the oil will be found at the surface of the mixture and it only remains to collect the same.

For2000 kilos of fullers earth, which has been used for the purpose mentioned above and which is usually more or less acid, from 100 to 110 kilos of carbonate of soda Na CO 10H O are required.

By the application of the process hereinbefore described fullers earth after having been used for decoloration and containing of oil, and which after passing through the press still contains, notwithstanding its having undergone heavy pressure, 20% of oil may, by the processes hereinbefore set forth, have the percentage of residual oil reduced to. as low as 2%.

What T claim is 1. The process of recovering oil from fullers earth and likematerials used in refining oils, consisting in incorporating with i said refining material salt water and an alkaline carbonate and then introducing into the mixture an acid to liberate carbonic acid for the purpose described.

2. The process of recovering oil from fullers earth and like materials used for refining oils, consisting in incorporating with said material salt water heating the mixture and incorporating sodium carbonate and sulfuric acid for the purpose described.

3. The process of recovering oil from fuller-s earth and like materials used in refining oils, consisting in incorporating with said material salt water sufficient to effect fluidity of the mass and adding an alkaline carbonate and an acid while subjecting the mass to heat and agitation for the purpose described.

a. The process of recovering oil from fullers earth and like materials used in refining oils consisting in incorporating with QOOO-parts by weight of said material,=700 to 800 parts of salt water of about 7 to 8 Baum, heatin the mass to about C, and incorporating to 110 parts crystallized soda and one part of sulfuric acid for the purpose described.

5. The process of recovering oil from fullers earth and like materials used in refining oils, consisting in incorporating water and a soluble alkaline carbonate with said material to form a fluid mass, heating the mixture and then liberating throughout the mass carbonic acid gas from said car honate for the urpose of freeing the oil grees, then treating the heated mixture with from the pal-tic es of earthy material and sulfuric acid and sodium carbonate which a permit the same to rise to the top of the is carefully thrown into the mass while it mass. is being agitated.

5 6. Extracting the oil contained in hydro- Signed at Paris, France, this fifteenth day 5 silicates, fullersearth, animal charcoal or of February 1910.

mineral black that has been used'for de- LOUIS-FELIZAT. coloring oil, by adding salt water to the Witnesses: earth or products in question, heating the DOMINIQUE CASALONGA,

1 0 mixture to a temperature of about 85 de- Locum SANTINL 

